Not known Factual Statements About human anatomy and physiology definition

Not known Factual Statements About human anatomy and physiology definition

Blog Article

circle of Willis – (also, arterial circle) anastomosis Situated at The bottom of your brain that ensures continual blood offer; fashioned from branches of the internal carotid and vertebral arteries; supplies blood on the Mind.

cuticle – in hair, the outermost layer of keratinocytes originating with the hair matrix, as observed inside of a cross-section from the hair bulb.

coronary arteries – branches in the ascending aorta that provide blood towards the heart; the still left coronary artery feeds the remaining facet in the heart, the left atrium and ventricle, as well as the interventricular septum; the best coronary artery feeds the proper atrium, portions of both ventricles, as well as the heart conduction procedure.

distal radioulnar joint – articulation involving The top in the ulna and the ulnar notch in the radius.

cupula – specialised framework inside the foundation of the semicircular canal that bends the stereocilia of hair cells when The top rotates Through the relative motion on the enclosed fluid.

adrenal medulla – interior layer in the adrenal glands that performs a vital function during the stress reaction by creating adrenaline and read more noradrenaline.

anterior horn – grey issue in more info the spinal cord that contains multipolar motor neurons, often known as the ventral horn.

cortex – in hair, the second or middle layer of keratinocytes originating from the hair matrix, as witnessed in a cross-part of the hair bulb.

checkpoint – development place within the mobile cycle all through which sure problems need to be fulfilled in order for the mobile to continue to a subsequence period.

antigen presentation – binding of processed antigen to your protein-binding cleft of A serious histocompatibility advanced molecule.

course switching – skill of B cells to change the course of antibody they develop without having altering the specificity for antigen.

anterior spinal artery – blood vessel from the merged branches with the vertebral arteries that runs together the anterior surface area of the spinal cord.

descending aorta – percentage of the aorta that proceeds downward past the top in the aortic arch; subdivided in to the thoracic aorta along with the abdominal aorta.

articular cartilage – thin layer of cartilage masking an epiphysis; minimizes friction and functions for a shock absorber.